Get better indoor coverage with VoWiFi & crystal-clear calls with VoLTE
Experience the best indoor & outdoor coverage
Do you have a USIM?
What do you need to do?
Please follow the step-by-step guide below on how to enable VoLTE on your Android or iOS phone.
If you are currently using a 32K SIM card, you will need to change it to a USIM (64K) in order to enjoy VoLTE.
High-Definition voice calls
Your phone calls to friends and family are getting an upgrade with VoLTE (Voice over LTE)! Introducing Celcom’s new and free feature that will allow you to enjoy calls in HD, plus more. *You may refer to your respective phone manufacturer to enable VoLTE.
To enjoy the wonders of VoLTE, customers must switch to USIM. With USIM, you can enjoy the smooth benefits of 4G data all while being ready for a 5G future. If you are currently a 32K SIM card user, please visit your nearest Celcom store to upgrade to a USIM (64K).